MD: External MD Power Supply for 722

2000-08-02 Thread James S. Lee


I use a Radio Shack "Portable CD Player Power Pack" (23-505) to power my Sony
PCM-M1 DAT recorder. The unit is essentially a CD-sized rechargeable lead acid
battery. I get hours of hum-free operation from each charge. It's great. Now I am
wondering if this device will work just as well with my Sharp 722 MD recorder. The
battery has a nominal 3 - 4.5 volt output, below the specified 5 volts called for
by the 722. Any thoughts? Would the relatively low voltage of the battery do any
damage by undercharging the Sharp battery? Any danger at all?

Jim Lee


--
==
James S. Lee| Net: [EMAIL PROTECTED]
Communication Studies, CB# 6235 | Phn: 919-962-4963
University of North Carolina - CH | Fax: 919-962-3305
Chapel Hill, NC 27599-6235  | Web: www.unc.edu/~jimlee/
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Re: MD: External MD Power Supply for 722

2000-08-02 Thread Ian Horsey


Providing the power pack can supply the current, then it should power
the 722 just fine.  I power my 702 off a Sony 4.5VDC mains adaptor
and I have never had any problems with it.

Ian



=
"First, there were some amoebas. Deviant amoebas
adapted better to the environment, thus becoming
monkeys. Then came Total Quality Management."

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Re: MD: External MD Power Supply for 722

2000-08-02 Thread Mike Burger


My understanding is that the 5 volt requirement is for the charging 
circuit.  I would think that by applying a lower voltage source, the 
charging circuit just wouldn't engage...

On Wed, 2 Aug 2000, James S. Lee wrote:

 
 I use a Radio Shack "Portable CD Player Power Pack" (23-505) to power my Sony
 PCM-M1 DAT recorder. The unit is essentially a CD-sized rechargeable lead acid
 battery. I get hours of hum-free operation from each charge. It's great. Now I am
 wondering if this device will work just as well with my Sharp 722 MD recorder. The
 battery has a nominal 3 - 4.5 volt output, below the specified 5 volts called for
 by the 722. Any thoughts? Would the relatively low voltage of the battery do any
 damage by undercharging the Sharp battery? Any danger at all?
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RE: MD: External MD Power Supply for 722

2000-08-02 Thread Tony Antoniou


Only thing is though, it won't charge any rechargeable batteries because of
the 0.5V discrepancy.


Adios,
LarZ

---  TAMA - The Strongest Name in Drums  ---

 -Original Message-
From:   [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]  On Behalf
Of Ian Horsey
Sent:   Thursday, 3 August 2000 12:03
To: [EMAIL PROTECTED]
Subject:Re: MD: External MD Power Supply for 722


Providing the power pack can supply the current, then it should power
the 722 just fine.  I power my 702 off a Sony 4.5VDC mains adaptor
and I have never had any problems with it.

Ian



=
"First, there were some amoebas. Deviant amoebas
adapted better to the environment, thus becoming
monkeys. Then came Total Quality Management."

  -- Scott Adams

http://www.btinternet.com/~ighorsey

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MD: wireless md-fm adapter

2000-08-02 Thread brd


Hi.  This is my first posting to the list after lurking for a week or
so.  I don't have a minidisc yet, but I'm awaiting the delivery of my
Sharp MD-MS722 this week, and have been browsing every MD related site I
can find.

At BestBuy's website, I ran across the following:
http://www.bestbuy.com/Detail.asp?m=111cat=193scat=197e=11001011

"Arkon Wireless Audio Adapter Plugs into lighter socket and powers CD or
MiniDisc player while transmitting sound through the car radio."

I had no idea there was such a thing for portables.  I know they
make/made cd changers that lived in the trunk but transmitted over your
car radio on some FM band.  This is really cool because my wife's car
doesn't have a  tape deck, just am/fm, and if this adapter works, it'd
be nice to use on long trips.

So, has anyone used one of these adapters before?  I remember hearing
that for cd-changers, the FM broadcast wasn't as desirable as a wired
connection, but even if the quality is just okay, this would be a
massive improvement over what's in the car now.  Plus, it looks like you
can power the minidisc with it, too, which is cool, and the thing only
costs $20.  Any experiences, good, bad, or otherwise?

Laters,
Brian
-- 
The 21st century begins on January 1, 2001.
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MD: Napster

2000-08-02 Thread Dodge


Will y'all stop with the Napster stuff ???
Thought this was an MD list ;-)

Greetz,
D

=

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A wise man once said : - Being in a relationship is talking soft and LYING HARD ! 
(Dodge, 1999)

What do you think ? You can e-mail me at [EMAIL PROTECTED] 

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RE: MD: Napster

2000-08-02 Thread Peter Forest


Yes and Napster is great for MD !!!

You can download all the song you want for FREE and put them on your MD...

Isn't it Great ??

Regards,

Peter.

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of Dodge
Sent: Wednesday, August 02, 2000 11:42 AM
To: [EMAIL PROTECTED]
Subject: MD: Napster



Will y'all stop with the Napster stuff ???
Thought this was an MD list ;-)

Greetz,
D

=



-

A wise man once said : - Being in a relationship is talking soft and LYING
HARD ! (Dodge, 1999)

What do you think ? You can e-mail me at [EMAIL PROTECTED]



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MD: Frequent Buyers Club and $5 off at Cassette House

2000-08-02 Thread Art Munson


Hi Folks,

Now, when you purchase products at our web site at www.tape.com you will
accumulate 2.5 cents for every dollar spent. You will then be able to redeem
the accumulated credits and apply them to future purchases.

For more information please go to http://www.tape.com/buyersclub.html.

We are also offering $5 off your purchase at Cassette House.

To get the $5 off, go to:
http://www.tape.com/discount/discount.html and enter "minidisc"
(no quotes) as the Customer ID and "081000" (no quotes)
as the discount code.

Remember "discount" and "081000" and do NOT use the quotes when
entering them on the discount page.

Minimum order is $30 for the $5.00 discount, only 1 order per
customer and the offer is good through 08/10/00.

Thank You

Art Munson

Cassette House
Blank Media
http://www.tape.com
http://www.cassettehouse.com

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Re: MD: wireless md-fm adapter

2000-08-02 Thread David W. Tamkin


Brian asked,

| Hi.  This is my first posting to the list after lurking for a week or
| so.  I don't have a minidisc yet, but I'm awaiting the delivery of my
| Sharp MD-MS722 this week, and have been browsing every MD related site I
| can find.

Good luck.

| At BestBuy's website, I ran across the following:
| http://www.bestbuy.com/Detail.asp?m=111cat=193scat=197e=11001011
| "Arkon Wireless Audio Adapter Plugs into lighter socket and powers CD or
| MiniDisc player while transmitting sound through the car radio."

(That URL isn't working today.  If you go to Best Buy's top page and search
for "Arkon" links show up for it and for its battery-powered counterpart, but
they reach "page unavailable" dead ends.)

Previous models from other manufacturers have performed VERY poorly.  I've
detailed my disappointment with them on this list in the past and don't want
to go into detail again: let's just say that I should have tested each I
bought in the store parking lot and gone right back inside to return it as
another list member (was it Jim Coon?) did instead of bothering to take them
home first.

| I had no idea there was such a thing for portables.

It doesn't have to be for a portable, though you're pretty much not going to
bring anything other than a portable into your car.  It's for anything with a
headphone or line-out jack.

| This is really cool because my wife's car doesn't have a  tape deck, just
| am/fm, and if this adapter works, it'd be nice to use on long trips.

It will be really cool if it works.  The Sound Feeder and the fX Wave didn't.

| Any experiences, good, bad, or otherwise?

Just bad, but maybe the Arkon is better than the other brands were.  You need
to live in a deserted area to find a quiet FM frequency for it, and if it's
like the models I tried a couple years ago, its transmitter will drift off
frequency all the time, so she'll spend all her time adjusting the radio to
find where the signal went instead of watching traffic and staying alive.

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RE: MD: Frequent Buyers Club and $5 off at Cassette House

2000-08-02 Thread Peter Forest


Why don't simply give a 2.5% on each order ???

It could be more simple, isn't it ???

Regards

Peter.

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of Art Munson
Sent: Wednesday, August 02, 2000 11:52 AM
To: Md-L-Digest
Subject: MD: Frequent Buyers Club and $5 off at Cassette House



Hi Folks,

Now, when you purchase products at our web site at www.tape.com you will
accumulate 2.5 cents for every dollar spent. You will then be able to redeem
the accumulated credits and apply them to future purchases.

For more information please go to http://www.tape.com/buyersclub.html.

We are also offering $5 off your purchase at Cassette House.

To get the $5 off, go to:
http://www.tape.com/discount/discount.html and enter "minidisc"
(no quotes) as the Customer ID and "081000" (no quotes)
as the discount code.

Remember "discount" and "081000" and do NOT use the quotes when
entering them on the discount page.

Minimum order is $30 for the $5.00 discount, only 1 order per
customer and the offer is good through 08/10/00.

Thank You

Art Munson

Cassette House
Blank Media
http://www.tape.com
http://www.cassettehouse.com

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Re: MD: MD Flip Cases

2000-08-02 Thread David W. Tamkin


Richard Tracy ... sorry, no umlauts on my keyboard ... asked,

| Can I assume the MINIDISCO MDs will lock into the Sony cases properly?

Theoretical answer:

If they fit into your MD player properly [and the Minidisco MDs I've bought
do], they should fit into Sony slip cases.

Practical answer:

I just tried a Minidisco-branded Hi-Space disc, which had come in a flip
case, in a slip case from a Sony disc.  It fit and locked exactly as well
as the Sony disc had.

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RE: MD: wireless md-fm adapter

2000-08-02 Thread Nathan White


"instead of watching traffic and staying alive."

HAHAHA
Killer cars


Nathan White
[EMAIL PROTECTED]

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
David W. Tamkin
Sent: Wednesday, August 02, 2000 12:17 PM
To: brd
Cc: MD-L
Subject: Re: MD: wireless md-fm adapter


Brian asked,

| Hi.  This is my first posting to the list after lurking for a week or
| so.  I don't have a minidisc yet, but I'm awaiting the delivery of my
| Sharp MD-MS722 this week, and have been browsing every MD related site I
| can find.

Good luck.

| At BestBuy's website, I ran across the following:
| http://www.bestbuy.com/Detail.asp?m=111cat=193scat=197e=11001011
| "Arkon Wireless Audio Adapter Plugs into lighter socket and powers CD or
| MiniDisc player while transmitting sound through the car radio."

(That URL isn't working today.  If you go to Best Buy's top page and search
for "Arkon" links show up for it and for its battery-powered counterpart,
but
they reach "page unavailable" dead ends.)

Previous models from other manufacturers have performed VERY poorly.  I've
detailed my disappointment with them on this list in the past and don't want
to go into detail again: let's just say that I should have tested each I
bought in the store parking lot and gone right back inside to return it as
another list member (was it Jim Coon?) did instead of bothering to take them
home first.

| I had no idea there was such a thing for portables.

It doesn't have to be for a portable, though you're pretty much not going to
bring anything other than a portable into your car.  It's for anything with
a
headphone or line-out jack.

| This is really cool because my wife's car doesn't have a  tape deck, just
| am/fm, and if this adapter works, it'd be nice to use on long trips.

It will be really cool if it works.  The Sound Feeder and the fX Wave
didn't.

| Any experiences, good, bad, or otherwise?

Just bad, but maybe the Arkon is better than the other brands were.  You
need
to live in a deserted area to find a quiet FM frequency for it, and if it's
like the models I tried a couple years ago, its transmitter will drift off
frequency all the time, so she'll spend all her time adjusting the radio to
find where the signal went instead of watching traffic and staying alive.

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Re: MD: Coverpro is cool!

2000-08-02 Thread Dan Frakes


Ultimate Label Printer Pro is a great MD label maker, too:

http://www.payplaysoftware.com/ULPP/

However, it appears that as of a few weeks ago, they dropped the Windows 
version, so it's only available for Mac now.
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Re: MD: earbuds

2000-08-02 Thread Dan Frakes


Joni Mustonen [EMAIL PROTECTED] wrote:
Best "loud and clear" earbuds that i can by ?

Do you want to spend $269? ;-) If so, 

http://www.headphone.com/ProductsHeadphones/EtymoticER4Sasp.asp
http://www.headphone.com/ProductsHeadphones/EtymoticER4P.asp

Are head and shoulders above anything else on the market.

Otherwise, people seem to like the Sony 888's
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Re: MD: wireless md-fm adapter

2000-08-02 Thread David W. Tamkin


I wrote, answering Brian,

| Previous models from other manufacturers have performed VERY poorly.

Since posting that, I saw a post on the MiniDiscussion board that the Arkon
Sound Feeder (apparently it's *not* a different manufacturer, then) stops
drifting after about twenty minutes' continuous operation, by which time it
is very warm.  The poster concluded that it is of no value for short trips
in town, but if you're going on a cross-country road trip, where you'll be
in remote areas with open FM frequencies much of the time and driving for
long stretches without stopping, it can be useful.

But if you have a cassette player in the car's sound system, use a cassette
adaptor instead.

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Re: MD: wireless md-fm adapter

2000-08-02 Thread PrinceGaz


 I wrote, answering Brian,

 | Previous models from other manufacturers have performed VERY poorly.

 Since posting that, I saw a post on the MiniDiscussion board that the Arkon
 Sound Feeder (apparently it's *not* a different manufacturer, then) stops
 drifting after about twenty minutes' continuous operation, by which time it
 is very warm.  The poster concluded that it is of no value for short trips
 in town, but if you're going on a cross-country road trip, where you'll be
 in remote areas with open FM frequencies much of the time and driving for
 long stretches without stopping, it can be useful.

 But if you have a cassette player in the car's sound system, use a cassette
 adaptor instead.

It's pretty obvious these VHF FM adapters must be using a simple tunable
LC oscillator to generate the frequency.  I could understand that twenty
years ago but today a crystal based PLL synthesiser costs maybe a coupla
dollars more, and would give a frequency as stable as the receiver.  You
could tune you radio to find a clear frequency say 105.7 then simply set
the xmtr to 105.7 on it's display.  Why don't they do it that way?

Yours,
PrinceGaz.


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Re: MD: External MD Power Supply for 722

2000-08-02 Thread Stainless Steel Rat


* Ian Horsey [EMAIL PROTECTED]  on Wed, 02 Aug 2000
| Providing the power pack can supply the current, then it should power
| the 722 just fine.  I power my 702 off a Sony 4.5VDC mains adaptor
| and I have never had any problems with it.

The 702 and 722 have nearly identical power requirements.
-- 
Rat [EMAIL PROTECTED]\ Do not use Happy Fun Ball on concrete.
Minion of Nathan - Nathan says Hi! \ 
PGP Key: at a key server near you!  \ 

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RE: MD: wireless md-fm adapter

2000-08-02 Thread Nathan White


My arkon transmits in Dolby Digital. Sends Coaxial signals through the air,
that a normal FM Radio can decode to give 6 discrete channels. Not bad for
a $19.99 device. :)

Nathan White
[EMAIL PROTECTED]

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
David W. Tamkin
Sent: Wednesday, August 02, 2000 3:17 PM
Cc: [EMAIL PROTECTED]
Subject: Re: MD: wireless md-fm adapter


I wrote, answering Brian,

| Previous models from other manufacturers have performed VERY poorly.

Since posting that, I saw a post on the MiniDiscussion board that the Arkon
Sound Feeder (apparently it's *not* a different manufacturer, then) stops
drifting after about twenty minutes' continuous operation, by which time it
is very warm.  The poster concluded that it is of no value for short trips
in town, but if you're going on a cross-country road trip, where you'll be
in remote areas with open FM frequencies much of the time and driving for
long stretches without stopping, it can be useful.

But if you have a cassette player in the car's sound system, use a cassette
adaptor instead.

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Re: MD: wireless md-fm adapter

2000-08-02 Thread David Sowa


because something that sells at Circuit City for $20 has to 
have a material cost in the $3-5 range.  I guess the real question
is why don't they make one that sells for $35 that actually
works.

dsowa

- Original Message - 
From: "PrinceGaz" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, August 02, 2000 3:29 PM
Subject: Re: MD: wireless md-fm adapter
 It's pretty obvious these VHF FM adapters must be using a simple tunable
 LC oscillator to generate the frequency.  I could understand that twenty
 years ago but today a crystal based PLL synthesiser costs maybe a coupla
 dollars more, and would give a frequency as stable as the receiver.  You
 could tune you radio to find a clear frequency say 105.7 then simply set
 the xmtr to 105.7 on it's display.  Why don't they do it that way?
 
 Yours,
 PrinceGaz.
 


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Re: MD: External MD Power Supply for 722

2000-08-02 Thread Mike Burger


As does the MT15.

On Wed, 2 Aug 2000, Stainless Steel Rat wrote:

 
 * Ian Horsey [EMAIL PROTECTED]  on Wed, 02 Aug 2000
 | Providing the power pack can supply the current, then it should power
 | the 722 just fine.  I power my 702 off a Sony 4.5VDC mains adaptor
 | and I have never had any problems with it.
 
 The 702 and 722 have nearly identical power requirements.

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Re: MD: wireless md-fm adapter

2000-08-02 Thread J. Coon


PrinceGaz wrote:
 
  It's pretty obvious these VHF FM adapters must be using a simple tunable
 LC oscillator to generate the frequency.  I could understand that twenty
 years ago but today a crystal based PLL synthesiser costs maybe a coupla
 dollars more, and would give a frequency as stable as the receiver.  You
 could tune you radio to find a clear frequency say 105.7 then simply set
 the xmtr to 105.7 on it's display.  Why don't they do it that way?
 



Probably 'cause they'd charge an extra $25 for the  $2 component.


--
Jim Coon
Not just another pretty mandolin picker.
mailto:[EMAIL PROTECTED]
If Gibson made cars, would they sound so sweet?

My first web page  

http://www.tir.com/~liteways
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Re: MD: External MD Power Supply for 722

2000-08-02 Thread J. Coon


You could get one of the computer cards that you can set to output any
voltage you want.  They are only $10 or $20 US, depending one the
model,  when I bought one in Germany a few months ago.  Of course
youwould have toi carry your computer around.  

Stainless Steel Rat wrote:
 
 * Ian Horsey [EMAIL PROTECTED]  on Wed, 02 Aug 2000
 | Providing the power pack can supply the current, then it should power
 | the 722 just fine.  I power my 702 off a Sony 4.5VDC mains adaptor
 | and I have never had any problems with it.
 
 The 702 and 722 have nearly identical power requirements.
 --
 Rat [EMAIL PROTECTED]\ Do not use Happy Fun Ball on concrete.
 Minion of Nathan - Nathan says Hi! \
 PGP Key: at a key server near you!  \
 
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--
Jim Coon
Not just another pretty mandolin picker.
mailto:[EMAIL PROTECTED]
If Gibson made cars, would they sound so sweet?

My first web page  

http://www.tir.com/~liteways
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Re: MD: External MD Power Supply for 722

2000-08-02 Thread PrinceGaz


 You could get one of the computer cards that you can set to output any
 voltage you want.  They are only $10 or $20 US, depending one the
 model,  when I bought one in Germany a few months ago.  Of course
 youwould have toi carry your computer around.

Good practical advice there Jim, actually it may be easier to carry
around your full size MD and Amp seperates plus speakers.  H...

Yours in jest,
PrinceGaz.


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Re: MD: demor-- er, monauralizing algorithms (was volume loss)

2000-08-02 Thread Jonathan Irwin


On Wed, 2 Aug 2000, David W. Tamkin wrote:

 How do mixing routines in sound editors calculate their results?  Do they
 just take the arithmetic mean of the amplitude?

I'm not sure but I expect that some do.

An alternative explanation for the reduction in volume:
It's possible that in your case the Left and Right channels are getting
slightly out of sync. with each other somewhere during the recording
process.  To see if this is the case you could record in stereo from a
source with two identical channels and then do an L-R comparison after
recording to the MD.  If they were out of sync. then this would tend to
reduce the amplitude causing what you are observing.

Jonathan


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Re: MD: demor-- er, monauralizing algorithms (was volume loss)

2000-08-02 Thread PrinceGaz



  ===
  = NB: Over 50% of this message is QUOTED, please  =
  = be more selective when quoting text =
  ===

I've found the best way to do monaural recording is to unplug one of
the RCA connectors (for a tape recording whichever has the lowest
recording level-- there is generally some discrepancy 'tween channels)
and take it from there.  No L/R interference, easy to set up, worked
fine with an audiobook (better than letting my R3 convert the two
channels into mono).
 ___  ___
|   ||   |
| o || o |
|   |  Gareth Bell - [EMAIL PROTECTED]   |   |
| o || o |
|   |  _ _   |   |
| o | |  __ \    _  _    _  /  ___| _    | O |
|   | | |__| )|  __)(_)|  _  \|  __)|  _  \ | |  _ ( \|__  / |   |
| o | |  ___/ | /   | || | | || |   | |_| | | | \ |/  _  | / _/  | O |
|   | | | | |   | || | | || |__ | / | |_| || |_| |/ /__  |   |
| o | |_| |_|   |_||_| |_||)|_) \_/|_||| | O |
|   ||   |
| o || o |
|   |   ICQ: 36892193  http://website.lineone.net/~princegaz/|   |
| o || o |
|   |"An it harm none, do what thou wilt"|   |
| o || o |
|___||___|


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Re: MD: demor-- er, monauralizing algorithms (was volume loss)

2000-08-02 Thread Jonathan Irwin


On Wed, 2 Aug 2000, PrinceGaz wrote:

 I've found the best way to do monaural recording is to unplug one of
 the RCA connectors (for a tape recording whichever has the lowest
 recording level-- there is generally some discrepancy 'tween channels)
 and take it from there.  No L/R interference, easy to set up, worked
 fine with an audiobook (better than letting my R3 convert the two
 channels into mono).

Is the volume OK (maximum) - if so, the recorder is probably averaging the
two input levels to get a mono signal.

It's a pity that this isn't very easy with SPDIF :)

Jonathan


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Re: MD: wireless md-fm adapter

2000-08-02 Thread PrinceGaz


From: "J. Coon" [EMAIL PROTECTED]
 So, how well does it work?  Does if fade in and out as you drive? Do you
 have to keep fiddling with it?

 Aside from that, I think you have the theory of operation wrong.  An FM
 radio responds to a frequency modulated radio frequency carrier. I don't
 know what an air born coaxial signal would be.  I studied coaxial
 transmission lines, open wire transmission lines, wave guides, etc. in
 school many many moons ago. I don't remember a coaxial signal. what do
 you mean by 6 discrete channels?  RF out or Coax?  Coax would require
 you to plug the cable into the receiver, while the antenna would pick up
 an RF output.

Isn't Dolby ProLogic surround sound derived from a normal stereo signal?
Therefore provided the xmtr sends a FM stereo signal the channels can be
reconstructed I would have thought.

 One of the problems with a small FM transmitter, is in a city with
 strong FM signals, near by, the FM capture effect will cause the
 receiver to lock on to the stronger station.
 This will happen  even if the small transmitter is rock solid and uses a
 phase locked loop and crystal oscillator as a reference.

A decent receiver these days doesn't need to grab a nearby signal, unless
you're listening to a pirate outfit with two-bit equipment, the transmitter
will be almost rock-solid frequency, the receiver is crystal controlled too
and also highly stable.  There is still some capture-effect in modern PLL
receivers (thats an inherent part of a phase-locked-loop) but...

Nearby I have Metro Radio on 97.1, and Tees FM on 96.6, but by tuning to
96.85 I can pick up the much more distant and weaker Border FM which I
think is on 96.8, and it is quite listenable most of the time (the distance
means it fades in and out).  It certainly doesn't try to jump onto those
stations just 0.25MHz either side.

Thats with a tuner that does *not* have wide/narrow selectivity on FM,
though it is a pretty good model nontheless (Denon TU-560L).  I bet the
Denon 660 if I'd bought it could on the "Narrow" setting grab that weak
signal between TFM (mediocre strength) and Metro FM (massive signal)
rather better.

So presumably a little transmitter maybe at most three meters from your
car aerial should have no problems.  Yes I know a car acts to some extent
as a Faraday cage but not that much, besides the radio itself might pick
up the signal more than the aerial outside the car.  Is the VHF FM band
really so cluttered in the states there are no free frequencies in big
cities?

Yours,
PrinceGaz.


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Re: MD: monauralizing algorithms

2000-08-02 Thread David W. Tamkin


Jonathan wrote,

| It's possible that in your case the Left and Right channels are getting
| slightly out of sync. with each other somewhere during the recording
| process.  To see if this is the case you could record in stereo from a
| source with two identical channels and then do an L-R comparison after
| recording to the MD.  If they were out of sync. then this would tend to
| reduce the amplitude causing what you are observing.

I had done an L-R on the original source track before copying it to MD, and
it flatlined.  If recording to MD in mono knocks the channels out of sync,
there is no way to tell afterward, because the MD recording is marked as mono
and will play back with two identical channels.

Recording to MD in stereo won't tell us any details about the volume loss,
because the volume loss won't occur.

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MD: demor-- er, monauralizing algorithms

2000-08-02 Thread Timothy P. Stockman


L+R/2 is almost universally used.  FM broadcast is trasmitted this way for
comptibility with monaural receivers.  The "mono" switch on preamplifiers
does this.  However, this simple, almost universally used transformation
does not provide a perfect mono version of a stereo source.  The reason is
that stereo channels add by *power* acoustically, whereas the electrical sum
L+R/2 adds by *voltage*.  Therefore, when recordings mixed with prominent
material in the center of the sound image, such as vocals, bass, etc.  are
electrically mixed to mono (L+R/2), the sounds in the center of the stereo
will be 3dB higher in the resultant mono mix compared with those at the left
or right edge (known in the recording industry as the "3dB center buildup").

How to solve this?  sqrt(L^2+R^2) is one method.  This method would be
particluarly good for a DSP implementation.   Another method is to rotate
the phase of the channels with an "all-pass" filter so that they are 90
degrees apart and add in quadrature.  This method is better for an analog
implementation.

I'd love to see a deck that implemented the first solution!

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MD: gnutella

2000-08-02 Thread J. Coon


Is anyone familiar with this program that is brought to us by the
letters M and P and the number 3?
http://gnutella.wego.com/
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MD: MD in Oz. Where to get them?

2000-08-02 Thread J. Coon


I have some friends in Oz that are finally getting interested in MD. 
Anyone with tips on where to get them in the land down under?  They live
in North Queensland, if that helps.


--
Jim Coon
Not just another pretty mandolin picker.
mailto:[EMAIL PROTECTED]
If Gibson made cars, would they sound so sweet?

My first web page  

http://www.tir.com/~liteways
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